PT Turbo Guides

Turbocharger Tech Explained

How turbochargers work: VGT, wastegates, balancing, OEM vs remanufactured, and rebuilding.

Garrett vs Holset vs BorgWarner: Which Diesel Turbo Brand Lasts Longest?
Turbocharger Tech Explained

Garrett vs Holset vs BorgWarner: Which Diesel Turbo Brand Lasts Longest?

Garrett, Holset, and BorgWarner dominate the diesel turbocharger market. Learn the strengths, typical failure points, and best applications for each brand before you buy.

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BorgWarner Schwitzer Turbocharger Guide: S-Series, K-Series & KKK Reference
Turbocharger Tech Explained

BorgWarner Schwitzer Turbocharger Guide: S-Series, K-Series & KKK Reference

This BorgWarner Schwitzer Turbocharger Guide exists because decades of mergers, rebrands, and cross-referenced part numbers have left even seasoned mechanics guessing which turbo actually bolts to…

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Garrett Turbocharger Complete Guide: GT, GTB, GTX & G-Series Reference
Turbocharger Tech Explained

Garrett Turbocharger Complete Guide: GT, GTB, GTX & G-Series Reference

This Garrett Turbocharger Complete Guide breaks down every major product family Garrett has built for diesel and performance applications, from the workhorse GT series to the…

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Holset Turbocharger Complete Model Guide: Every Series from HX to HE Explained
Turbocharger Tech Explained

Holset Turbocharger Complete Model Guide: Every Series from HX to HE Explained

Welcome to the Holset Turbocharger Complete Model Guide, the reference PT Turbo built from more than 45 years of turning wrenches on diesel turbos. Holset (the…

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IHI Turbocharger Complete Model Guide: RHF, RHB, VF & Marine Series Reference
Turbocharger Tech Explained

IHI Turbocharger Complete Model Guide: RHF, RHB, VF & Marine Series Reference

If you’ve spun a wrench on Japanese and European diesels, you already know the IHI turbocharger by feel. The RHF and RHB series bolt to everything…

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IHI RHF5 Turbocharger: Isuzu & Light Commercial Applications Guide
Turbocharger Tech Explained

IHI RHF5 Turbocharger: Isuzu & Light Commercial Applications Guide

The IHI RHF5 turbocharger is one of the most common units a diesel tech will ever pull off a light commercial rig, and for good reason.…

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BorgWarner K31 Turbocharger: MAN, Mercedes-Benz & Volvo Penta Application Guide
Turbocharger Tech Explained

BorgWarner K31 Turbocharger: MAN, Mercedes-Benz & Volvo Penta Application Guide

The BorgWarner K31 turbocharger is a large fixed geometry turbo from the K-series that BorgWarner inherited from the German maker KKK. It is a European heavy-engine…

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BorgWarner S300 vs S400 vs S480: Which Turbocharger for Your Application?
Turbocharger Tech Explained

BorgWarner S300 vs S400 vs S480: Which Turbocharger for Your Application?

If you’re spec’ing a turbo for a diesel build or a fleet repower, the BorgWarner S300 vs S400 vs S480 question comes up on nearly every…

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BorgWarner S400 Turbocharger: High-Flow Applications & Fitment Reference
Turbocharger Tech Explained

BorgWarner S400 Turbocharger: High-Flow Applications & Fitment Reference

The BorgWarner S400 turbocharger is the workhorse behind more high-flow diesel builds than almost any other frame on the market. If you’re pushing a Cummins, Duramax,…

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BorgWarner S300 Turbocharger: Complete Application Guide for Cummins, CAT & Detroit
Turbocharger Tech Explained

BorgWarner S300 Turbocharger: Complete Application Guide for Cummins, CAT & Detroit

The BorgWarner S300 turbocharger is the workhorse of the medium and heavy-duty diesel world. If you’ve spun a wrench on an International DT466, a John Deere…

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Garrett GTB1752VK and GTB1752VKL Turbochargers: Chevy Colorado & GMC Canyon 2.8L Duramax Guide
Turbocharger Tech Explained

Garrett GTB1752VK and GTB1752VKL Turbochargers: Chevy Colorado & GMC Canyon 2.8L Duramax Guide

The Garrett GTB1752VK turbocharger and its close relative the GTB1752VKL are small variable geometry turbos for four-cylinder diesels. In North America the one you are most…

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Garrett GT3788VA Turbocharger: Duramax LML Variable Geometry Guide
Turbocharger Tech Explained

Garrett GT3788VA Turbocharger: Duramax LML Variable Geometry Guide

The Garrett GT3788VA turbocharger is the variable geometry unit bolted to every 2011–2016 6.6L Duramax LML, and if you turn wrenches on GM heavy-duty trucks you…

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